Lagrangian Floats for CBLAST

Abstract

Neutrally buoyant Lagrangian floats were air-deployed into hurricanes during the 2002, 2003 and 2004 hurricane seasons. The floats are designed to be used in energetic turbulent flows such as those found in the top and bottom boundary layers of the ocean. A combination of accurate ballasting, compressibility matched to that of seawater and high drag is used to make these floats follow the motion of water parcels accurately (D Asaro 2003). Water velocity is inferred from the motion of the floats; high frequency fluctuations in velocity can be used to infer dissipation rate (Lien and D Asaro, 2005) and covariance of vertical velocity with scalars can be used to compute heat and other fluxes (D Asaro, 2004).

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2005
Accession Number
ADA572341

Entities

People

  • Eric A. D'Asaro

Organizations

  • University of Washington

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Barometric Pressure
  • Boundaries
  • Boundary Layer
  • Buoyancy
  • Cold Water
  • Convection
  • Energy
  • Energy Transfer
  • Frequency
  • Froude Number
  • Kinetic Energy
  • Layers
  • Measurement
  • Standards
  • Surface Waves
  • Turbulent Flow
  • Water

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers

Technology Areas

  • AI & ML